YEREVAN. – Yerevan Mayor Taron Margaryan discussed with the U.S. Ambassador John Heffern issues of enlarging cooperation between the city hall and the U.S. Embassy. The Mayor welcomed the Ambassador and estimated high Heffern’s attention to the projects directed to the development of the capital city, city hall press service reports. Margaryan also emphasized Heffern’s personal active participation and practical steps endeavor.   The Ambassador, expressing gratitude for the warm reception and the readiness to enlarge cooperation, discussed with the Mayor the offer for the initiative ‘We Can’ scheduled on Sept. 15. According to the initiative, a one-day action, supported by the US Embassy, will be organized to clean the territory from rubbish nearby the historical-cultural places and monuments.